摘要
In the last two years or so,there has been increasing interest in hydrogen as an energy source in Australia[1–3]and around the world.Notably,this is not the first time that hydrogen has caught our collective interest.Most recently,the 2000s saw a substantial investment in hydrogen research,development,and demonstration around the world.Prior to that,the oil crises of the 1970s also stimulated significant investment in hydrogen,and earlier still,the literature on hydrogen was not lacking.And yet,the hydrogen economy is still an idea only.So what,if anything,might be different this time?
